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Some of the graffiti may have damaged ancient, Native American petroglyphs, Mr. Pilcher, the park ranger, said.
WSJ: Outbreak of Graffiti Defaces a Beauty Spot
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The damaged rock art might be remnants of early settlements of the Serrano or Chemehuevi Indian tribes, Mr. Pilcher said.
WSJ: Outbreak of Graffiti Defaces a Beauty Spot
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Pilcher, a multimedia journalist in Iowa, a hotbed for the sport.
CNN: Wrestling may be cut from Olympic Games
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Even so, the process of building so many formulas "helps us think about what life needs and what environmental requirements are necessary to support life, " said Carl Pilcher, director of NASA's Astrobiology Institute at Ames.
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Mark Pilcher from the Environment Agency said the water was currently rising at a rate which is "faster than the pumps could manage" and that there was a risk "a small amount may be discharged".
BBC: Concern contaminated Wheal Jane water may pollute river